CN216788871U

CN216788871U - Cylinder with buffer function

Info

Publication number: CN216788871U
Application number: CN202220509738.0U
Authority: CN
Inventors: 张占杰
Original assignee: Hebei Jiaganghang Jinsheng Machinery Equipment Co ltd
Current assignee: Hebei Jiaganghang Jinsheng Machinery Equipment Co ltd
Priority date: 2022-03-10
Filing date: 2022-03-10
Publication date: 2022-06-21
Anticipated expiration: 2032-03-10

Abstract

The utility model aims to provide a cylinder with a buffer function, which realizes the quick action of the cylinder, and has the buffer function when the action of the cylinder is finished so as to solve the problems of short service life, unstable operation and the like of the quick action cylinder; in order to achieve the above object, the solution of the present invention is to provide a cylinder with a buffer function, comprising: the piston is connected with the right end cover through the cylinder, the piston is in sliding connection with the cylinder, a piston rod is arranged on the piston, the piston rod penetrates through the right end cover to the outside of the cylinder, a buffer device is arranged on the left end cover, the buffer device penetrates through the left end cover and is located on the same axis with the piston rod, and the buffer device is used for buffering the movement of the piston rod.

Description

Cylinder with buffer function

Technical Field

The utility model relates to the technical field of pneumatics, in particular to a cylinder with a buffering function.

Background

The cylinder is also called as a pneumatic actuating mechanism or a pneumatic actuating device, is an important component of a pneumatic transmission and control system, and is widely applied to the industrial production and processing fields of petrochemical industry, coal chemical industry, metallurgy, electric power and the like. The cylinder generally uses a piston as a carrier, and the piston is pushed by gas pressure, so that the piston, a piston rod and other components move or rotate. Generally, a cylinder with large torque or large thrust usually requires short action time, which puts very high requirements on the quick exhaust of the cylinder and the buffer performance under the quick action. Generally, a buffer mechanism of the cylinder adopts a non-metal buffer ring or other contact type buffer pad structures, and the impact force of the cylinder is large, so that the defects of short service life, poor reliability and the like of the non-metal buffer ring or the buffer pad are caused.

CN105020203B discloses a high-speed cylinder of built-in pneumatic buffer, including the cylinder sleeve, do straight reciprocating motion's piston along cylinder sleeve hole, locate the piston rod of piston one side, set up respectively in the pole side end cover and the no pole side end cover at cylinder sleeve both ends, be provided with the consistent pole side buffer and the no pole side buffer of structure on pole side end cover and the no pole side end cover respectively, pole side buffer and no pole side buffer all include: the buffer device comprises a buffer device valve body and a fixed containing cavity component connected to one side of the buffer device valve body, wherein the middle part of the buffer device valve body is provided with an installation through hole which is in sealing fit with a rod side end cover or a rodless side end cover, and an overflow valve unit, an exhaust sliding valve unit and a check valve unit are arranged in the buffer device valve body.

Therefore, the cylinder which intermittently and quickly exhausts when needing to act is provided to the pneumatic technical field in a targeted manner, the cylinder with the buffering function is provided, and the technical problem to be solved is needed.

Disclosure of Invention

The utility model aims to provide a cylinder with a buffer function, which realizes the quick action of the cylinder, and has the buffer function when the action of the cylinder is finished, so as to solve the problems of short service life, unstable operation and the like of the quick action cylinder.

In order to achieve the above object, the solution of the present invention is to provide a cylinder with a buffer function, comprising: the piston is connected with the cylinder barrel in a sliding manner, a piston rod is arranged on the piston, the piston rod penetrates through the right end cover to the outside of the cylinder barrel, a buffer device is arranged on the left end cover, penetrates through the left end cover and is positioned on the same axis as the piston rod, and the buffer device is used for buffering the movement of the piston rod; the piston divides into left cylinder and right cylinder with the cylinder inside, be equipped with the blow vent on left end lid and the right-hand member lid respectively, the blow vent is connected with external air supply and is used for promoting the motion of piston.

Furthermore, the buffering device comprises a sleeve, a buffering piston and a buffering cover, wherein an exhaust passage is arranged in the sleeve, the buffering piston is arranged at the head of the sleeve, and the buffering cover is arranged at the tail of the sleeve; the sleeve body portion is equipped with inlet channel, be equipped with the exhaust hole on the buffering lid, the gas in the left cylinder gets into the sleeve through inlet channel, and the exhaust hole that covers through the buffering after exhaust channel discharges.

Furthermore, one end of the buffer piston is positioned in the exhaust channel, the other end of the buffer piston is provided with a gland, and an elastic element is arranged between the gland and the end surface of the sleeve and used for resetting the buffer piston; preferably, the elastic element is a spring.

Furthermore, a guide ring is arranged at the central hole of the sleeve, and an inner hole of the guide ring is in contact with the outer cylindrical surface of the buffer piston to support the buffer piston to move along the axial direction; preferably, the non-metallic material of the guide ring can be any one of polytetrafluoroethylene, polyurethane and polyether ether ketone.

Furthermore, the outer surface of the gland is of a hollow cylinder structure, the end face of the gland is a cylinder limiting end face, the end face of the gland is in contact with the piston rod when the piston rod moves, and the cylinder limiting end face is attached to the right end face of the sleeve when the piston rod and the piston move to the end point, so that the end point limitation of the cylinder is realized; preferably, the axial sectioning surface of the gland is of an approximate M-shaped structure, one end part of the gland is of a semi-spherical or conical structure, the contact area of the end surface and the end surface of the piston rod is small, the motion centering performance of the buffer piston is better, and the center of the other end of the gland is of a stud-shaped structure and is fixedly connected with the buffer piston through threads.

Furthermore, the air inlet passage comprises a first air inlet and a second air inlet, the first air inlet is located at the head of the sleeve, the second air inlet is located at the body of the sleeve, a speed regulating valve is arranged in the second air inlet, and the gas flow of the gas flowing through the second air inlet can be adjusted by adjusting the opening degree of the speed regulating valve.

Further, the buffer cover is embedded with an exhaust cover, the exhaust cover can slide along the axial direction of the buffer cover, and the exhaust cover can seal the exhaust channel through sliding.

Furthermore, a central hole is formed in the middle of the buffering cover, a storage cavity is formed in one surface, facing the buffering cover, of the exhaust cover, the storage cavity is communicated with the central hole of the buffering cover, and high-pressure gas is introduced through the central hole to enter the storage cavity to push the exhaust cover to plug the exhaust channel.

Further, one surface of the exhaust cover facing the exhaust channel is conical.

Furthermore, a plurality of uniformly distributed air holes are formed in the end face of one side, extending into the cylinder barrel, of the sleeve, and the air holes can discharge redundant air when the buffer piston moves to the rightmost end under the action of the elastic element and contacts with the inner wall of the sleeve, so that the right end face of the buffer piston is attached to the inner wall of the end face of the sleeve.

The utility model has the advantages that:

have buffer function when the cylinder action is ended, stability problem when can prolong cylinder life and solve the cylinder motion.

Drawings

FIG. 1 is a schematic view of a cylinder with a cushioning function according to the present invention;

fig. 2 is a schematic view of a buffering device provided by the present invention.

As shown in the figure, 1-piston rod, 2-right end cover, 3-piston, 4-cylinder barrel, 5-left end cover, 6-buffer device, 6-1-sleeve, 6-2-exhaust cover, 6-3-buffer cover, 6-4-speed regulating valve, 6-5-second air inlet, 6-6-first air inlet, 6-7-buffer piston, 6-8-elastic element, 6-9-gland, 6-10-guide ring, 6-11-exhaust channel, 6-12-storage cavity and 6-13-air hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.

As shown in fig. 1, a cylinder having a buffering function includes: the cylinder barrel 4 and the piston 3 that is located the inside of cylinder barrel 4, the both ends of cylinder barrel 4 are left end lid 5 and right-hand member lid 2 respectively, connect through cylinder barrel 4 between left end lid 5 and the right-hand member lid 2, piston 3 with 4 sliding connection of cylinder barrel, be equipped with piston rod 1 on the piston 3, piston rod 1 passes right-hand member lid 2 to the cylinder barrel 4 outside, be equipped with buffer 6 on the left end lid 5, buffer 6 passes left end lid 5 and with piston rod 1 is in on the same axis, buffer 6 is used for the motion of piston rod 1 provides the buffering, piston 3 is divided into left cylinder and right cylinder with the cylinder is inside, be equipped with the blow vent on left end lid 5 and the right-hand member lid 2 respectively, the blow vent is connected with external air supply and is used for promoting the motion of piston 3.

As shown in fig. 2, the buffer device 6 comprises a sleeve 6-1, a buffer piston 6-7 and a buffer cover 6-3, wherein an exhaust passage 6-11 is arranged in the sleeve 6-1, the buffer piston 6-7 is arranged at the head of the sleeve 6-1, and the buffer cover 6-3 is arranged at the tail of the sleeve 6-1; an air inlet channel is arranged on the body part of the sleeve 6-1, an air outlet hole is formed in the buffer cover 6-3, air in the left air cylinder enters the sleeve 6-1 through the air inlet channel and is exhausted through the air outlet hole in the buffer cover 6-3 after passing through the air outlet channel 6-11.

One end of the buffer piston 6-7 is positioned in the exhaust passage 6-11, the other end of the buffer piston 6-7 is provided with a gland 6-9, an elastic element 6-8 is arranged between the gland 6-9 and the end face of the sleeve 6-1, and the elastic element 6-8 is used for resetting the buffer piston 6-7; the elastic elements 6-8 are springs; a guide ring 6-10 is arranged at the central hole of the sleeve 6-1, and an inner hole of the guide ring 6-10 is in contact with the outer cylindrical surface of the buffer piston 6-7 to support the buffer piston 6-7 to move along the axial direction; the guide ring 6-10 is made of polytetrafluoroethylene; the outer surface of the gland 6-9 is of a hollow cylinder structure, the end face of the gland 6-9 is a cylinder limiting end face, the end face of the gland 6-9 is in contact with the piston rod 1 when the piston rod 1 moves, and the cylinder limiting end face is attached to the right end face of the sleeve 6-1 when the piston rod 1 and the piston 3 move to the end point, so that the end point limitation of the cylinder is realized; the axial cutting surface of the gland 6-9 is of an approximate M-shaped structure, one end of the gland is of a semi-spherical or conical structure, the contact area of the end surface and the end surface of the piston rod 1 is small, the motion centering performance of the buffer piston 6-7 is better, and the center of the other end of the gland 6-9 is of a stud structure and is fixedly connected with the buffer piston 6-7 through threads.

The air inlet channel comprises a first air inlet 6-6 and a second air inlet 6-5, the first air inlet 6-6 is positioned at the head part of the sleeve 6-1, the second air inlet 6-5 is positioned at the body part of the sleeve 6-1, a speed regulating valve 6-4 is arranged in the second air inlet 6-5, and the flow of air flowing through the second air inlet 6-5 can be adjusted by adjusting the opening degree of the speed regulating valve 6-4; a plurality of uniformly distributed air holes 6-13 are formed in the end face of one side, extending into the cylinder barrel 4, of the sleeve 6-1, and the air holes 6-13 can discharge redundant air when the buffer piston 6-7 moves to the rightmost end to be in contact with the inner wall of the sleeve 6-1 under the action of an elastic element 6-8, so that the right end face of the buffer piston 6-7 is attached to the inner wall of the end face of the sleeve 6-1.

The buffer cover 6-3 is embedded with an exhaust cover 6-2, the exhaust cover 6-2 can slide along the axial direction of the buffer cover 6-3, the exhaust cover 6-2 can slide to plug the exhaust channel 6-11, the middle part of the buffer cover 6-3 is provided with a central hole, one surface of the exhaust cover 6-2 facing the buffer cover 6-3 is provided with a storage cavity 6-12, the storage cavity 6-12 is communicated with the central hole of the buffer cover 6-3, high-pressure gas is introduced into the storage cavity 6-12 through the central hole to push the exhaust cover 6-2 to plug the exhaust channel 6-11, and one surface of the exhaust cover 6-2 facing the exhaust channel 6-11 is conical to facilitate gas diffusion and exhaust.

The specific working process comprises the following steps:

when the cylinder does work outwards: the gas enters the left cylinder through the vent hole in the left end cover 5, the gas in the right cylinder is discharged through the vent hole in the right end cover 2, high-pressure gas is introduced into the storage cavity 6-12, the exhaust passage 6-11 is blocked by pushing the exhaust cover 6-2, the gas in the left cylinder cannot enter the buffer device 6, and the piston 3 and the piston rod 1 are pushed to move rightwards to do work outwards under the action of air pressure.

When the cylinder is in the buffering step: the piston rod 1 drives the piston 3 to move leftwards, a vent hole on the left end cover 5 is closed, and gas enters the sleeve 6-1 through the first gas inlet 6-6 and the second gas inlet 6-5, passes through the exhaust channel 6-11 and then is exhausted through an exhaust hole on the buffer cover 6-3; when the tail part of the piston rod 1 is contacted with the buffer piston 6-7, the buffer piston 6-7 is driven to move leftwards, the first air inlet 6-6 is separated from the exhaust channel 6-11, the air passes through the second air inlet 6-5, passes through the speed regulating valve 6-4, enters the exhaust channel 6-11 and is exhausted through the exhaust hole in the buffer cover 6-3, the air pressure in the left air cylinder is increased under the action of the speed regulating valve 6-4, the piston 3 is driven to decelerate until the piston stops moving, and the air cylinder enters the acting step again; the buffer piston 6-7 is reset under the action of the elastic force of the spring, and gas is discharged into the left cylinder through the air hole.

It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without inventive step, shall fall within the scope of protection of the present invention.

Claims

1. A cylinder with a cushion function, characterized by comprising: the piston cylinder comprises a cylinder barrel (4) and a piston (3) located inside the cylinder barrel (4), wherein a left end cover (5) and a right end cover (2) are respectively arranged at two ends of the cylinder barrel (4), the left end cover (5) and the right end cover (2) are connected through the cylinder barrel (4), the piston (3) is in sliding connection with the cylinder barrel (4), a piston rod (1) is arranged on the piston (3), the piston rod (1) penetrates through the right end cover (2) to the outside of the cylinder barrel (4), a buffer device (6) is arranged on the left end cover (5), the buffer device (6) penetrates through the left end cover (5) and is located on the same axis with the piston rod (1), and the buffer device (6) is used for buffering the movement of the piston rod (1); piston (3) divide into left cylinder and right cylinder with cylinder inside, be equipped with the blow vent on left end lid (5) and right-hand member lid (2) respectively.

2. The cylinder with the buffering function according to claim 1, wherein the buffering device (6) comprises a sleeve (6-1), a buffering piston (6-7) and a buffering cover (6-3), an exhaust channel (6-11) is arranged in the sleeve (6-1), the buffering piston (6-7) is arranged at the head of the sleeve (6-1), and the buffering cover (6-3) is arranged at the tail of the sleeve (6-1); an air inlet channel is arranged on the body part of the sleeve (6-1), and an exhaust hole is arranged on the buffer cover (6-3).

3. A cylinder with damping function according to claim 2, characterized in that one end of the damping piston (6-7) is located in the exhaust channel (6-11), the other end of the damping piston (6-7) is provided with a gland (6-9), an elastic element (6-8) is arranged between the gland (6-9) and the end surface of the sleeve (6-1), and the elastic element (6-8) is used for resetting the damping piston (6-7).

4. A cylinder with buffer function according to claim 3, characterized in that the central hole of the sleeve (6-1) is provided with a guide ring (6-10), the inner hole of the guide ring (6-10) is contacted with the outer cylindrical surface of the buffer piston (6-7) to support the buffer piston (6-7) to move along the axial direction.

5. The air cylinder with the buffering function is characterized in that the outer surface of the gland (6-9) is of a hollow cylinder structure, the end face of the gland (6-9) is an air cylinder limiting end face, and the end face of the gland (6-9) is in contact with the piston rod (1) when the piston rod (1) moves.

6. A cylinder with buffer function according to claim 5, characterized in that the air inlet channel comprises a first air inlet (6-6) and a second air inlet (6-5), the first air inlet (6-6) is located at the head of the sleeve (6-1), the second air inlet (6-5) is located at the body of the sleeve (6-1), a speed regulating valve (6-4) is arranged in the second air inlet (6-5), and the flow of air flowing through the second air inlet (6-5) can be adjusted by adjusting the opening degree of the speed regulating valve (6-4).

7. A cylinder with buffer function according to claim 6, characterized in that the buffer cover (6-3) is embedded with an exhaust cover (6-2), the exhaust cover (6-2) can slide along the axial direction of the buffer cover (6-3), and the exhaust cover (6-2) can block the exhaust channel (6-11) by sliding.

8. A cylinder with buffer function according to claim 7, characterized in that the middle of the buffer cover (6-3) is provided with a central hole, the side of the exhaust cover (6-2) facing the buffer cover (6-3) is provided with a storage cavity (6-12), and the storage cavity (6-12) is communicated with the central hole of the buffer cover (6-3).

9. A cylinder with a buffer function according to claim 8, characterized in that the side of the exhaust cover (6-2) facing the exhaust passage (6-11) is tapered.

10. The cylinder with the buffering function according to claim 8, wherein a plurality of uniformly distributed air holes (6-13) are formed in one end face, extending into the cylinder barrel (4), of the sleeve (6-1), and the air holes (6-13) can discharge redundant air when the buffering piston (6-7) is moved to the rightmost end to be in contact with the inner wall of the sleeve (6-1) under the action of the elastic element (6-8), so that the right end face of the buffering piston (6-7) is attached to the inner wall of the end face of the sleeve (6-1).